AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

DNA REPLICATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Because the strands are anti-parallel, the ____ will move AWAY from the replication fork.
A
leading strand
B
lagging strand
Explanation: 

Detailed explanation-1: -The leading and lagging strands now both pass through the dimeric subunits ‘left to right’ but in opposite 5’ 3’ directions, and that lagging strand synthesis is directed away from the replication fork, as a series of short Okazaki fragments.

Detailed explanation-2: -One strand is synthesized continuously in the direction of the replication fork; this is called the leading strand. The other strand is synthesized in a direction away from the replication fork, in short stretches of DNA known as Okazaki fragments. This strand is known as the lagging strand.

Detailed explanation-3: -The antiparallel structure of DNA is important in DNA replication because it replicates the leading strand one way and the lagging strand the other way. During DNA replication, the leading strand is replicated continuously whereas the lagging strand is replicated in segments known as Okazaki fragments.

Detailed explanation-4: -The name of the strand that elongates away from the replication fork in a series of segments is called the lagging strand.

There is 1 question to complete.